function ah(a,h)	

	for i=1,a do 
		io.write('/') 
	end
	io.write('\n')


	for i=1,h-2 do
	        for i=1,i do 
			io.write(' ')
		end
		for j=1+i,a+i do
			if(j==1+i) then
				io.write('/')
			elseif(j==i+a) then
				io.write('/')
			else 
				io.write(' ')
			end
	       	end
		io.write('\n')
	end

	for i=1,h-1 do 
		io.write(' ')
	end

	for i=1,a do 
		io.write('/') 
	end
	io.write('\n')
	io.write('\n\n')
end


io.write('BingXinSiBianXin a=')
a=io.read()
io.write('h=')
h=io.read()
for i=a,a+a,4 do ah(i,h+i-a) end
